Calculating machine



Dec. 19, 1944. A s, DENNls n 2,365,527

CALCULATING MACHINE Filed Dec. 30, 1941 14 Sheets-Sheet l.

El el |21 el a s g F' I E.. .J

OOO

ATTonNgY A'. s. DENNIS CALCULATING MACHINE Filed Dec. so, 1941 Deen 19', 1944.

14 Sheets-Sheet 2 NQ NN m wml* EN SN m km www MMM , ATH-omen Dec. 19, 1944. A. s. DENNIS 2,365,527

CALCULATING MACHINE Filed Dec. 50, 1941 14 Sheets-Sheet 3 ATTORNEY DeC- 19, 1944- A. s. DENNIS cALcULATING MACHINE Filed Dec. 3o. 1941 14 sheets-sum1 INNEN-fon /400//0/205 e/vn/'s ATTORN EY Dec. 19, 1944. A. s. DENNIS CALCULATING MACHINE Filed nec. so. 1941 14 Sheets-Sheet 5 mm NS m@ ATTORNEY De. 19, 1944. A. s. DENNIS CALCULATING MACHINE Filed Dec. .30, 1941 14 Sheets-Sheet 6 IIIEHPEH.

www

ATTORNEY Dec. 19, 1944. A. s. DENNIS CALCULATING MACHINE Filed Dec. 30, 1941 14 Sheets-Sheet '7 .I m4. .Inl- H-LHH www Dec. 19,A 1944. A. s. bvNNls 2,365,527

CALCULATING MACHNEA Filed Dec. 30, 1941 14 Sheets-Sheet 8 INVNToR ATTORNEY De@ 19 1944. A. s. DENNIS 2,365,527

CALCULTING MACHINE y Filed nec. so. 11941 14 sheets-sheet 9 De. 19, 1944. A. s. DENNIS CALCULATING MACHINE Filed nec. so. 1941 1 4 Sheets-Sheet- 10 FILE-...12.-

Dec. 19, 1944. 2,365,527

AQ S. DENNIS CALCULATING MACHINE Filed Dec. 30, 1941 14 Sheets-Sheet 11 INVENTOR BYWM ATTORNEY Dec. 19, 1944. n A. snr-:NMS 2,365,527

CALCULATING MACHINE 14 sheets-snml 12 www ATTORNEY Dec. 19, 1944. A s. DENNIS GALCULATIHG CHINE ATTORNEY Dec. 19, 194,4. A s. DENms CLCULATIN Cm rma uw. so. 1941 14 mets-smi 14 Namid liwsmfoa #dak/bus j kann Avromzv ...imw l., @HIRE Patented Dec. 19, 1944 UNITED STATES PATENT OFFICE CALCULATING MACHINE Adolphus S. Dennis, Oakland, Calif., assignor to Friden Calculating Machine Co., Inc., a corporation of California Application December 30, 1941, Serial No. 424,959

2 Claims.

This invention relates to calculating machines i and is concerned more particularly with the provision of a combined typewriter and calculating machine in which the number keys of the typewriter can control setting of the multiplier and multiplicand values in the calculating machine. l It is a general object of the invention to provide an improved machine in which typewriter number keys can control a multiplying operation.

Another object of the invention is to provide y' for selective control by typewriter number keys over both multiplier and multiplicand selection mechanisms.

Another object of the invention is to provide operation of the keys of a typewriter by power.

Another object of the invention is to provide an attachment whereby conventional typewriter mechanism can be employed in conjunction with conventional calculator mechanism to perform a l plural order multiplying operation under control of values written by the typewriting mechanism. Other objects and advantages of the invention will be apparent from the following description of a preferred embodiment thereof as illustrated in the accompanying drawings, in which:

Figure 1 is a. plan view of the combined machine.

\ vation, the View being control mechanism taken as indicated by the line lll- |0111 Figure 9.

Figure 11 is an elevational view of a part of the drive mechanism,` the view being taken as indicated by the line I I-l l in Figure 9.

Figure 12 is a sectional elevational view of the number key controlled selecting means, the View` the line I 2--l 2 in in Figure 1.

` Figure 15 is a fragmentary view partly in section of a rocker arm for the selection control mechanism.

Figur`2 is a fragmentary sectional view through l the multiplicand selection mechanism of the machine, the View being taken as indicated by the line 2 2 in 'Figure 1.

Figure 3 is a vertical sectional view of the mechanism shown in Figure 2 taken as indicated by the line 3--3 in Figure 2.

Figure 4 is a sectional elevational view of the multiplier selection mechanism of the machine taken asindicated by the line 4-4 in Figure 1.

Figure 5 is a sectional transverse elevational view of Ithe mechanism as illustrated by the line 5-5 in Figure 4.

Figure 6 is a sectionalview of aportion of the control mechanism taken as indicated by the line 6--6 in Figure 5.

Figure '7 is a plan view of a portion of the multiplicand selection control mechanism taken las' indicated by the line 1,--1 in Figure 3.

Figure 8 is a sectional elevational view of a part of .the control and drive mechanisms taken as indicated by the line 8-8 in A Figure 5.

'Figure 9 is a front elevational view of mechanism below the typewriter, the view being taken inside the housing as indicated by the line 9-9 in Figur 10.

Figure 10 is a sectional elevational view of typewriter key control and a portion of the tabulating Figure 16 is a detailed sectional view taken as indicatedaby the line |6-l6 'in Figure 14. Figure 17 is a cross sectional view taken along the line I'l-l 'l in Figure 16.

Figure 18 is a sectional view oi atypical clutch mechanism taken as indicated by the line |8--I8 in Figure 10. f

Figure 19s a sectional view of the clutch mechanism taken as indicated by the line I 9-I 9 in Figure 18. Figure 20 is a sectional view-oi' a portion of the dri've mechanism for the multipllcand selection carriage taken as indicated by the line 2li-20 in Figure 10.'

i. The combined typewriting and calculating machine as. illustrated in Figure 1 comprises a conventional form of calculator 20 and a conventional form of typewriter 2l which are mounted on a common base 22. The calculator 20 is of the character employed for carrying out addition, subtraction, division, and multiplication, the latter mechanism being preferably of the character adapted to carry out plural order multiplications in an automatic manner as hereinafter described. The typewriter 2l may be of the usual manually operated type although it is preferred to employ power operation for; at least some of the keys, for example the number keys as later described.

Calculator l Thecalculator selected for purposes of illustration is of the character disclosed in the paty ent to Carl M. Friden No. 2,229,889, dated January 28. 194:1, and the copurding applications of Carl M. Friden, Serial No. 205,546, filed May 2, 1938, and of Carl M. Friden and Anthony B. Machado, Serial No. 348,966, tiled July 31, 1940.

Referring to Figure 1, the calculator includes a body 25 in which the actuating, selecting, and control mechanisms are mounted and carriage 26 which is mounted for endwise shifting movement transversely of the body 25 and which carries numeral wheels 21 and 28 of the accumulator and revolutions counter, respectively. Carriage 26 can be shifted by power in either direction by manipulationA of respective shift keys 29 and 30 through mechanism of conventional character.

Body 25 of the calculating machine includes a base 25a (Figure 5) whose supporting feet 2517 rest on base 22 and may be located thereon and secured thereto by'studs 25e.

Values are entered into the calculator by de-.

pression of numeral keys 32 of the usual value entering or multiplicand keyboard in the various ordinal rows thereof, keys 32 being releasable individually by depression of ordinal clear keys 32a or collectively by depression of clear key 33. Values introduced into the calculator may be registered additively or subtractively on numeral Wheels 21 by depression of plus key 34 or minus key 35, respectively. If desired, add key 36 may be depressed to cause clearing of the keyboard in the usual manner and for single registration in l the accumulator.

Values registered in numeral wheels 21 and 28 can be removed through resetting mechanism operated by manipulation of respective manually operable resetting handles 31, 38 or by power through depression of return and clear key 39. f

Upon operation of key 39, the carriage 26 is returned to its farthest left position where a resetting operation of both the accumulator and the revolutions counter or either is/effected.

The calculator is adapted to perform automatic plural order division by means of conventional division mechanism including starting control lever 4I. Automatic predetermined multiplication can also be performed by depression of the multiplier selection keys 42 to set up the desired multiplier gure as indicated on dials 43 and by depression of one of multiplication keys 44, 45 or 46`to"` start the multiplying operation. Key 41 is a correction key for correcting the multiplier figure and zeroizing theindicating dials 43.

Multiplicand selecting mechanism-The multiplicand selecting mechanism controlled by the numeral keys 32 (Figure 2) is of the character disclosed in said Patent No. 2,229,889. Only those portions of this selecting mechanism necessary to an understanding of the instant invention are shown and twill be described. Each bank or order of keys 32 (Figure 2) cooperates with a pair of 'similar spring-urged value selecting slides 5i, |a which are mounted for endwise movement by suitable supporting means. Slide 5l is provided With cam surfaces of varying inclination for cooperation with suitable pins of certain of keys 32 to eilect a differential movement of the slide 5i to the leftfrom the position shown in Figure 2. lThe amount of the movement is dependent upon the value of the associated key 32. Slide 5i of each ordei cooperates with 1 to 5 keys 32 of a bank, while the slide 5| a cooperates with the "6 to 9 keys of a bank. Y

Each selectingslide 5I and 51a is connected at itsy rear end with suitable gearing adapted to transmit values to the numeral wheels from the associated actuating cylinders as disclosed in said patent.

Each bank of keys 32 (Figure 2) has a latch slide 52 of conventional construction associated therewith to latch any depressed key 32 in depressed position against the tension of the spring associated therewith. Latching slides 52 are operable individually to release depressed keys by ordinal clear keys 32a or collectively by oscillation of key release bail 53 pivoted at 54. Bail 53 is operable in response to depression of clear key 33 or by power under control of key 36 as `disclosed in said patent.

Multiplier selection `mechanism.-The selection mechanism for the multiplier figures is of the type disclosed in said application 205,546.

Generally such mechanism comprises a ten key keyboard including keys 42 (Figure 4) and an ordnally shiftable pin carriage B0 associatedtherewith.v Pin carriage is mounted for step-b y-step movement transversely of the machine by means including rod 6I. Pin carriage 60 has ten ordinal rows of settable stop pins 62 and ten ordinal diiferentially adjustable elements 63 in the form of racks in which digits of the multiplier may be set successively for subsequent control of the multiplying operation. In order to set up the multiplier digits, each pin row includes eight pins 62 corresponding to the one to eight keys and a fixed stop cooperating with the aligned rack 63 and corresponding to the nine key. A depressed multiplier key 42 operates through an associated selection lever 64 to set the corresponding pin 62 in aligned ordinal row to active or raised position, There are eight selection levers 64 having their ends 64a terminating in a common plane in alignment with one of the rows of stop pins 62. Each selection lever 64 is pivoted at 56 and is gravity urged against a stop plate 61.

At the same time that a pin 62 of the pin carriage is moved to active position, the aligned rack 63 is released to move into engagement with the pin and thereby be set diil'erentially in accordance with the value of the depressed key. For this'purpose, each stop 58 for rack 63 is aligned with and adapted for release by reelasing arm 69 pivoted at 10 and connected by a, suitable means including a link 1l for operation upon depression of any of the multiplier keys 42 including the nine key.

Each multiplier selection key 42 is also associated with a suitable escapement mechanism, a portion of which is seen at 12, so that the pin carriage 60 is released to move one step upon depression of each key 42 in a manner fully disclosed in said application 205,546.

In the above manner, the multiplier digits are set up in the multiplier selection mechanism, the settingA operation beginning with the highest order digit of the multiplier in the embodiment illustrated.

Multiplier operation and control.- The differentially adjusted positions of the racks 53 vare utilized to control the number of registrations of the multiplicand in the accumulator in the respective ordinal positions thereof and the return of each rack to its initial position is used to control the ordinal shift of the accumulator after each ordinal multiplication as well as' to shift the pin carriage 6|! so that the next higher order rack 63 comes into controlling position with respect to the operation of the machine.

The operating and control mechanism is brought into play under the control of any of keys 44, 45 and 45 in any convenient manner, for example as disclosed in said application, 348,966.

.or guides 9|.

Typewriter Referring to Figure 1, the 'typewriter indicated at 2| may be of any conventional construction and includes a frame 8| (Figures 1 and 14) having feet 82 resting upon and secured to a raised portion 22a of the main frame or base 22. The typewriter includes a paper oarriagei 83 (Figure 1) of the usual constructionand type bars 84 which are operated in the usual manner from the letter keys 85 and number keys 86. As shown, the row of number keys may also include a key for the number l as a variation from the standard keyboard, so that all the number keys 86 are arranged in a single row.

While a conventional, hand operated typewriting machine may be employed, it is preferred to provide power operation for the number keys 86 which are also utilized, as later described, to set values into both the multiplicand and multiplier selection mechanisms of the calculating machine.

Power operation of typebars-Referring to Figure 14, the number key 86 corresponding to 5 is shown guided in the usual spaced combs The key is suitably pivoted at its rearward end in the usual fashion in a manner not shown. Key stem 92 is connected by a suitable linkage 93 to the associated type bar 84. Key stem 92 is pivotally connected `at 94 to a slotted angle bracket 96 removably carried by an auxiliary key stem 91. Key stem 91 extends in a plane at right angles to the key stem 92 and is guided by transverse horizontal guide plate 98 suitably secured at its ends to brackets 99 depending from the portion`22a of the base. It will be understood that an auxiliary stem 91 is provided for each of the number keys 86.

Below the guide plate 98, each auxiliary key stem 91 (Figures 15, 16 and 17) is provided with opposed drive faces |0| of suitable material such as rubber, cork or the like, each of Which is mounted in a pressed steel holder |02. The respective holders |02 of each auxiliary key stem are suitably secured as by rivet |03 to the stem 91 (Figures 16 and 17). As seen in Figure 17, each drive face |0I has a lower tapering end |0|a. Ends |0|a provide a V-shaped lower end of the driving faces which is normally out of the path of segmental drive portions |06 of rotatable driving rollers |01 secured on respective shafts I 08. Rollers |01 may be formed of material suitable to grip and actuate the stems 91 in a." positive manner without slip or loss of power.

Each drive portion |06 is of less axial width than the spacing between the-flanges of the cooperating retainer |02 and extends circumferentially,

nalled in brackets 99 and are geared together byl means of respective gears Il (Figures 9 and 10) at each end thereof.-

The drive for gears shafts |08, and roll- 'ers |01 is placed under control of the. number keys of the typewriter, whereby upon depression of a key a half-cycle movement of the rollers takes place after which the drive is interrupted if the key is maintained depressed until release of the key when the last half-cycle of. the movement is completed. The rollers are effective dur during the last half-cycle of the operation. As shown, the rollers |01 move through one-half revolution for each typing cycle.

As seen in Figure 8, one shaft |08. for one of gears I carries a large gear l I6 which meshes with a small gear ||1 secured on a shaft ||8 journalled in thel adjacent'bracket 99. As seen inI Figure 12, shaft ||8 carries a gear ||9 at the left-hand side of bracket 99 similar to gear ||1 (see Figure 1 1).l Gear ||9 meshes with a gear |2| secured on a tubular shaft |22 (Figures 9, l1 and 20) which is suitably journaled on the shaft |23 journaled in the brackets 99. Tubular shaft |22 (Figures 10`and 20) is connected to a clutch housing |24 of conventional construction and adapted to be driven by a driving clutch element including ratchet gear |25 secured on shaft |23. Clutch control dog |26 pivotally secured to housing |24 is provided for controlling the driving engagement betweenA ratchet gear |25 and clutch housing |24, yas hereinafter described. Driving ratchet |25 has a keyed connection with a gear I 21 (Figure 20) having its hub |21a pinned on shaft |23. Gear |21 (Figure l0) is driven by a pinion |28 secured on a suitably supported shaft |29. Shaft |29 also carries a worm wheel |30 which meshes with a driving wormv I 3| secured on motor shaft |32 of constantly running motor |33 (Figures 8, l0 and 11).

In order to control the engagement of the clutch for the power driven means of any type- Writer number key, stem 91 (Figure 10) is provided with ay clutch operating bracket |36 (Figure 10) which overlies a transverse clutch operating bar 31 extending between and integrally formed with end levers |38 secured on transverse shaft |39. Opposite the bail portion |31, the levers |38 are connected by cross rod I4| (Figures 9 andA 10) having a pair of springs |42 connected thereto adjacent the ends of the rod. Also secured on shaft |39 are a pair of similar arms |43 connected by a transverse pin |44 which is disposed between respective clutch controlling levers |46 and |41 which are journaled on shaflt |39 between the hubs of arms |43 and have their outer ends offset to lie in the same plane as seen in Figure 12. Clutch controlling arms |46 and |41 are connected by spring |48 (Figure 10). It

will be understood that the bail |31 extends along the entire row of number keys and their auxiliary stems 91 for operation by any one of these keys;

Normally the clutch controlling lever |46 is held in clutch disengaging,y position as shown in Figure l0 where stud |49 engages the tail of clutch dog |26. Uponk depression of a key 91 thel bail |31, levers |38 and shaft |39 are rocked downwardly from the position shown in Figure 10 to release theclutch and at the same time the arm |41 is moved down to clutch disengaging position by lmeans of spring |48.

Thus, upon depression of an auxiliary number key stem 91, the clutch is engaged and will determine a drive for the rollers for either a partial or a full cycle.

partial cycle by the engagement of stud |50 on an arm |41 with the clutch dog |26. Upon subsequent release of the depressed key 91, the clutch is again engaged and completes its drive cycle and is disengaged by stud |49 on arm |46.

ing the rst half-cycle to effect operation of the Y type bar corresponding to the key depressed, while the parts may be restored to normal position If a number is depressed and immediately rearm |46` and stud |49 thereon.

lf the key is maintained depressed, the clutch becomes disengaged after al Multiplication control.-As previously explained, the number keys of the typewriter can be selectively employed to set both the multiplier and multiplicand values into the corresponding selection mechanisms of the calculator or, if desired, the number keys can be used in the usual fashion without such setting. y

As seen in Figures 10, 12 and 13, each auxiliary stem 91 of a number key is provided with a flange or extension |5| extending at right angles to the generalV plane of the key stem and extending downwardly adjacent the bail |31 as seen in Figure l0. For selective cooperation with each of the extensions |5|, apair of spring urged plungers |52, |53 (Figures 10, 12 and 13) are provided which are mounted for endwise sliding movement in a transverse rail |54 and are spring-urged upwardly by respective springs |56. Plungers |52, |53 carry respective cam elements |51, |58 at their lower ends which engage the lower face of rail |54 to limit upward movement of plungers |52, |53. As seen most clearly in Figure 13, an adjacent pair of plungers |52 and |53' are spaced apart a distance slightly greater than the width of the key stem extension |5| so that the key can be depressed without operating either of the plungers. However, upon sliding movement of the set of plungers |52 d |53 to either the .right or left from the sition shown in Figure 13, one or the other of the plungers will come into operative position below the associated extension |5|.

As seen in Figure 10, cam element |51 @or |58 of plungers |52, |53 are constantly inoperative relation with respective cooperating cam surfaces |6| and |62 carried by respective associated slides |63 and |64. Each slide 63, |64 is carried at one end by a depending arm |36 pivoted on a transverse shaft |61 and is supported adjacent its other end by an upstandig arm |63 pivoted on a transverse shaft |69. Thus each of the slides |63, |64 is mounted for endwise sliding movement in the event the associated plunger is depressed by the associated number key. Thus each number key of the typewriter has associated therewith a pair of slides which may be selectively operated through the associated auxiliary key stem 31 by appropriate positioning of the slidable rail |54. Each slide |63, |64 is spring-urged to its initial inactive position as shown in Figure 10 by spring |13 (Figure 15) cooperating 'with a rod extension |63a (or |64a) pivotally connected to the associated slide.

Each slide |63 (Figures 10, 12 and 13) is piv- `otally connected to an arm |1| secured on a rod 'bearing collars 2|| (Figure 3) in frame brackets 2|2 later referred to. The rod |12 when rocked by the associated key stem 91 operates a correspondingly valued portion of -the multiplicand `selection mechanism of the calculating machine,

while the sleeve |14 when operated by the associated key stemV 91 operates the correspondingly y 1, lever |19 can be adJusd in either direction from a central neutral position.

Multiplier selection-As seen in Figures 4 and 5, the ten tubes |14 corresponding to the number keys 0 to "9 extend from beneath the typewriter to a location beneath the calculator where the ends terminate in staggered relation. Each tube |14 is provided with an upstanding arm |33 having a pin'l83 engaging in a forked portion |34 l of an associated slide |33. Slides |33 are mounted for endwise sliding movement by slotted engagement with respective studs |33. Each slide |35 with the exception of the "0" slide |35 and the "9 slide |35 is provided with an upstanding finger |31 which is disposed behind the correspondingly valued selection lever 34 of the mult|- plier selection mechanism 33. Thus, upon rocking of any one of the multiplier selection sleeves |14 valued from 1 to 8, the correspondingly valued multiplier selectionlever 34 will be moved to operative position. Slides |33 from "1" to "9 each have an upstanding ear |33 operatively related to a transverse rod |33 carried by depending arm |9| (Figures 4) secured to the lower valued portion of the multiplier selection mechanism. The rail |54 (Figures 10, lland 13) is s lidably mountedin respective brackets |11 and |13 which are suitably supported from the base -22 so that capement mechanism of the multiplier selection mechanism upon operation or a slide |33. 'I'his means comprises a bail |32 (Figure 4) which has its ends pivoted at |33 in suitable" brackets on the frame. Bail |32 engages the forked lower end |94 of an adjustable connection |33 which 4 extends upwardly` and is connected to lever |31 pivoted at |33. One end oflever |31 overlies a lip |33 o1' the multiplier escapement mechanism 12. Each slide |33 is provided with a cam surface 23| for cooperation with the bail-|32 to push the link |33 upwardly and rock lever |31 madepressed lip |33 and thereby operate theI escapement mechanism so that the multiplier selection mechanism 33 moves one step to the left after f entry of a multiplier digit into position for entry of the next lower multiplier figure; It will be noted that operation oi the multiplier escapellrent is the only function From the above description, it will be apparent that successive operation o! selected number keys of the typewriter will cause corresponding values to be successively entered from the highest to the lowest order in the multiplier selection mechanism carried by the multiplier selection carriage 63 of the calculator.

Multiplicand selection- As seen in Figure 3, each multiplicand selection shaft |12 is extended through the bearing collar 2|| and carries a splined portion 2|3. As seen in Figures 2. 3 and v'7, each splined portion 2|3 is slidably engaged 0f the "0" slide multiplicand selection carriage indicated generally at 2|8. As seen in Figure 2, the various selection levers 2|`6 are positioned alternatively in opposite walls of the carriage 2|8 and have their ends disposed in two parallel lines which lie at opposite sides (Figure 3) of the key stems 2|9 to cooperate with one of a pair of rollers 228 carried at thelower end of each auxiliary key stem 2| 9. Each key stem 2|9 has a value corresponding to the value of the associated selection lever 2|6, splined portion 2|3 and multiplicand selection shaft |12. Each key stem 2|9 forms part of a bank of auxiliary keys ysimilar in construction to the keys 32 except that they are inverted. The keys 2|9 represent, from left to right in Figure 2, to "9." The "1 to "5 keys 2|9 cooperate with the 1 to "5 selection rack 22|, while the "6 to 9 keys 2|9 cooperate with the "6 to "9 rack 222. Each rack 22| or 222 is connected by a bellcrank 223 to the associated slide or 5|a of the keyboard selection mechanism of the calculator.

Thus when the multiplicand selection carriage 2|8 is aligned with a selected bank or order of the auxiliary keys 2|9, operation of a number key of the typewriter will set the corresponding value into the keyboard selection mechanism. The "1" t0 "9 keys 2|9 (Figure 2) of each bank are latched in depressed position by spring-urged latch slide 224 of conventional construction.

" Each latch slide 224 may be operated to release an active auxiliary key 2| 9 by operation of the 0 number key of the typewriter. The latch slides 224 may be released as a gang by the en'- gagement of extensions 224a thereof which project through front plate 225 of the auxiliary keyboard into cooperating relation with respective double acting cams'226 mounted on shaft 221 journaled on plate 225. Shaft 221 has arm 228 thereon operable manually by key 229, or operated automatically through link 238 from keyrelease bail 53 of the calculator keyboard as explained in said patent and said application.

As previously stated, the carriage 2|8 is shiftable from order to order of the auxiliary keyboard and for this purpose has respective rollers 23| (Figures 2 and 7) at its ends received in tracks 232 carried by brackets 2|2 of the frame. The carriage 2| 8 also carries a depending block 233 having ball bearing connections 234 in respective tracks 236. v

The carriage 2|8 is mounted for0 ordinal shifting movement and can be tabulated to a selected initial position and then moved back in stepby-step fashion as the values are entered into the multiplicand keyboard so that the multiplicand values can be entered from the highest through the lowest orders thereof. Depending block 233 of the carriage 2| 8 (Figure 3) is connectedby a rod 242 (Figures 3 and 5) to a shift rack 243 (Figure 5)having ordinally spaced teeth 244 for engagement with shift pins 245 carried by shift disc 246 secured on shaft 241. Spring urged centralizers 248 are engaged with the disc 246. Rack 243 has suitable guide bearings engaging support rods 249 and 258 (Figures 5 and 8).

Shaft 241 of the shift mechanism for the multiplicand selection carriage is connected by a drive connectionconsisting of a pair of spiral gears (Figure 8) to vertical shaft 252 (Figend of each revolution of gear |2I. Thus each time a number key is operated in writing oi the multiplicand selection gure after entry of a multiplicand gure, the multiplicand selection carriage will be shifted towards its normal position (to the right in Figure 5) in cooperative relation with the next lower order of the auxiliary keyboard.

I-n order lto initially position the multiplicand selection carriage for entry of the highest order multiplicand digit, shift drive shaft 241 (Figure 8) is connected by bevel gearing 26| to a shaft 282 which is suitably journalled in plates 11, and |18 and |15 of the machine in spaced parallel relation from a shaft 263. Mounted on one end'of shaft 262 is a notched disc 265 which is centralized by spring-urged arms 218. The other end of shaft 262 carries a friction disc 215 riding under spring-urged arm 219. Shaft 263 carries pinion 264 which is driven by gear 266 on shaft 261. Shaft 261 also carries a worm wheel 268 driven from Worm 269 on shaft 21| having a gear 212 driven from gear 213 on vshaft 214. Shaft 214 carries a gear 216 meshing `with gear 211 on the drive shaft of constantly running motor 218. rl'hus, shaft 263 (Figures 8 and 9) is also constantly driven. Shaft 263 is the drive shaft for a series of tabulating clutches indicated generally at 28| (Figures 9, 10, 18 and 19) for shifting the multiplicand selection carriage for one or more steps from its initial position (the units order).

Clutch 28| (Figures 18 and 19) comprises a housing 282 carrying a pivotal clutch dog 283 forV engagement with driving ratchet 284 on shaft 263 under the iniluence of spring 286 when the clutch is engaged. Clutch housing'28| carries teeth 281 correspondingin numberjto the de' sired number of steps of movement of the selection carriage and adapted for meshing with a corresponding gear-288 on shaft 282. Normally the clutch dog 2'83 is held inactive by stud 29| (Figures 10 and 19) on clutch control lever 292. In this full cycle position, centralizer 293 engages in notched disc 294 on the clutch housing. Con- 1 trol lever 282 (Figure 10) is pivoted at296 coaxially with a second control lever 291 to which it is connected by spring 298. Control lever 291 carries a stud 38| for operating lever 292 and a stud 382 for disengaging the clutch in half-cycle position. Lever 291 has a pin and slot connection 383 with a tab setting key 384 pivoted at 386 and urged upwardly by spring 381., Key 384 also overlies pin 388 on bellcrank 389 which is operatively related to centralizer 293.`

Thus, upon depression oi' any one of keys 304 (Figure 1-) the multiplier selection carriage will be tabulated to a desired position to begin the multiplicand setting operation.

When the typewriter and calculator are used independently of each other, the controls are conditioned as shown in Figure 1 with the control,

. lever |19 at neutral ures 5 and 8) which is connected by bevel gear- If a multiplication is to be performed and the multiplier value is to be entered first, the lever |19 is moved to the right as seen in Figure 1 which moves rail |54 to the left as viewed in Figures 5 and 13 to associate plungers |53 with keystems |5|. Thus slides |64 (Figure 13) and sleeves |14 of the multiplier setting means will be operated upon operation of the number keys 86 (Figure 1). Then number keys are operated to Write off the multiplier value from the highest to the lowest orderdigit so that this value is typed in the typewriter and entered into the multiplier selection mechanism simultaneously.

To enter the multiplicand value, the lever |19 is moved to the left in Figure 1, so that rail |54 is moved to the right in Figures and 13 and plungers |52 are placed beneath keystems |5| and Values can be transmitted through slides |63 (Figure 13), shafts |12 to multiplicand'selecton carriage 2|8. Before operation of the number keys, carriage 2|8 (Figure 3) is tabulated the required number of ordinal positions from its lowest order position by depression of a tabulating key 304. After carriage 2|8 is properly positioned the number keys are operated to enter the multiplicand value.

Either the multiplicand or multiplier values may be entered first but care should be taken that the tabulation of the multiplicand selection carriage 2|8 immediately precedes the entering of the multiplicand values. v y

After the multiplieand and multiplier values are entered, the multiplying operation is initiated and performed in the usual manner.

I claimt 1. An apparatus for utilizing a typewriter and a calculating machine for conjoint action to facilitate obtaining printed records of calculations Where the calculating machine is of the type having two selecting mechanisms settable to different factors of a calculation, a keyboard above one selecting mechanism operable to set a multiplier factor therein, and a second keyboard above the second selecting mechanism operable to set a multiplicand factor therein: said apparatus comprising a base on which the typewriter and the calculating machine are mounted, a row of elements', each movable in response to operation of a corresponding numeral key in the typewriter, a seriesof members adapted to -be positioned in'cooperative relationship with said elements so that movement of one of said elements is imparted to the associated member, mechanism in said base for transmitting motion from said members to one ofv said selecting mecha- ,elements so that movement of one of said elements is imparted to the associated member, and mechanism in said base for transmitting motion from said members to the other of said selecting mechanisms, whereby as the multiplier and multiplicand vfactors are printed in the typewriter they can be simultaneously set up in the selecting mechanisms of the calculating machine without employing the keyboards thereof.

2. An apparatus for utilizing a typewriter and a calculating machine for conjoint action to facilitate obtaining printed records of calculations where the calculating machine is of the type having two selecting mechanisms settable to different factors of a calculation, a keyboard above one selecting mechanism operable to set a multiplier A factor therein, and a second keyboard above the second selecting mechanism operable to set a multiplicand factor therein; said apparatus comprising a base on which the typewriter and the calculating machine arefmounted, a row of elements, each movable in response to operation of a corresponding numeral key in the typewriter, two series of members mounted in a com,- mon carrier in said base, means to adjust said carrier to bring either of said two series of members into cooperative relationship with said row of elements so that movement of one of said elements is imparted to the member cooperatively 

